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Synonyms

whistle-blower

British  

noun

  1. informal a person who informs on someone or puts a stop to something

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In 2008, both Lee Jae-yong and his father resigned after a former Samsung lawyer turned whistle-blower claimed knowledge of a slush fund that was being used for bribes and political payoffs.

From BBC • Apr. 29, 2026

The claim alleges video captured on the devices is routed to contractors in Africa for AI training purposes, citing whistle-blower complaints.

From Barron's • Mar. 31, 2026

Well-known whistle-blower Nelson Amenya voiced similar concerns, urging the Kenyan government to release the full agreement so "we can read it for ourselves".

From BBC • Dec. 5, 2025

These laws demand reporting on safety incidents, strengthen whistle-blower protections, and require disclosures on mental health chatbots—all reasonable and targeted interventions that protect our communities and our families.

From Barron's • Dec. 4, 2025

Just as most students at Ohio State University read Liar’s Poker as a how-to manual, most TV and radio interviewers read me as a whistle-blower.

From "The Big Short" by Michael Lewis

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